ch 29 pt 2

Question 1

amnion

Answer 1

water bag

Question 2

allantois

Answer 2

forms embryonic urinary bladder

Question 3

parturition

Answer 3

childbirth, expulsion of fetus

Question 4

labor

Answer 4

strong rhythmic contractions

Question 5

stages of labor

Answer 5

dilation

expulsion

placental

Question 6

dilation stage

Answer 6

cervix dilates, onset of labor contractions

Question 7

expulsion stage

Answer 7

fetus is delivered

Question 8

placental stage

Answer 8

contractions break placenta free of endometrium and delivers it out as the afterbirth

Question 10

hormone that maintains the viablilty of corpus luteum

Answer 10

hCG

Question 11

The correct sequence of preembryonic structures is

Answer 11

zygote, morula, blastocyst

Question 12

The trophoblast will eventually become part of the

Answer 12

placenta

Question 13

Implantation involves

Answer 13

embedding of the blastocyst in the uterine wall

Question 14

The formation of the three cell layers in the embryo occurs at

Answer 14

gastrulation

Question 15

The deciduas basalis is

Answer 15

located between the developing embryo and myometrium
- hels form placenta

Question 16

Which extraembryonic membrane appears first?

Answer 16

yolk sac

Question 17

In the process of in vitro fertilization, the woman is given _____ to induce follicle development

Answer 17

human menopausal gonadotropin

Question 18

The embryonic period lasts from the second week through _____ week

Answer 18

eight

Question 19

What prevents the maternal and embryonic blood cells from mixing?

Answer 19

placental membrane

Question 20

When would drugs or radiation produce the greatest harm?

Answer 20

4th week

Question 21

What is the major cell process in the fetus?

Answer 21

mitosis

Question 22

When can the male and female organs be distinguished first?

Answer 22

12th week

Question 23

neonatal period

Answer 23

birth to 1 month

Question 24

infancy

Answer 24

first year of life

Question 25

childhood

Answer 25

infancy to puberty

Question 26

adolescence

Answer 26

period of sexual and physical maturation

Question 27

what week does gastrulation occur

Answer 27

week 3

Question 28

what forms the placenta

Answer 28

chorion

Question 29

The Extra-embryonic membranes that develop from the endoderm and the mesoderm are the

Answer 29

yolk sac and the amnion

Question 30

Which of the following structures are contained in the umbilical cord, or umbilical stalk?

Answer 30

yolk stalk, allantois, blood vessels

Question 31

Fraternal, or dizygotic, twins result from

Answer 31

2 oocytes being ovulated in 1 cycle

Question 32

Which systems that are relatively nonfunctional during the fetus’ prenatal period must become functional at birth?

Answer 32

the respiratory, digestive, and urinary systems

Question 33

What is the hormone that is produced by the placenta and stimulates the mother’s ovaries to continue the production of progesterone?

Answer 33

hCG